Sue Sisley, MD

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Dr. Sue Sisley MD resides in Arizona and Montana, practicing Internal Medicine & Psychiatry and now primarily managing Hospice/Palliative Care. Sue was 1/2 of Arizona’s only mother-daughter physician team with beloved Dr. Hanna Sisley MD for 25 years. 

Sue serves as Principal Investigator of Scottsdale Research Institute conducting FDA-approved randomized controlled trials examining safety/efficacy of psilocybin mushrooms & cannabis flower for our veterans, and first responders who have recurrent pain and PTSD. 

Dr. Sisley holds the only DEA schedule 1 license in the country to farm natural psilocybin mushrooms for human research, growing over 8 different strains of psilocybin cubensis to study as a potential substitute for opioid addiction. 

Sisley was awarded $2.75 million grant from State of AZ in 2024 to conduct the 1st ever human trials with whole natural psilocybin mushrooms in patients with life-threatening illness. 

These DEA schedule 1 licenses came after her organization Scottsdale Research Institute toppled over a 53 year old monopoly at NIDA/University of Mississippi thru multi-year litigation in Federal Court, and was among 1st Approved by DEA for Licensing to Grow Cannabis for Research.